Wanted to repair my beloved Specialized AirForce floor pump. Couldn't get new parts for the worn out hose end. Cut the clamp to remove the original hose and replaced it with this one - secured it with a small hose clamp (available at any hardware or automotive store) and was back in business. Simple! Thumb lock is a little stiff, but that will improve with use.

I bought this to replace a worn-out automatic-switching Presta/Schrader head on a red Nashbar pump. Mine must be "A red" Nashbar pump rather than "The Red" Nashbar Pump, because there's no similarity between the old and new heads. The inconvenience of not automatically switching from Schrader to Presta isn't an issue for me as it would be for many, but the awkwardness of the metal thumb-lever is: it's so hard to engage it that I often pull the hose out of the connector that holds it to the head, and I fear it's only a matter of time before it causes me to break the valve stem off of a tube. And, as another poster mentioned, it seems to defeat the best feature of the Presta valve design, which normally prevents air from escaping as you remove the head from the value. With this one, it evidently depresses the valve physically and keeps it depressed until after you break the seal in the process of removing the head.

Bought this to replace a pump chuck with a plastic thumb lever that had broken after many years. I thought the metal thumb lever meant this replacement would also last many years, but after a year of use the back of the plastic chuck body supporting the pin pivot of the thumb lever broke off.

I purchased this for my old Nashbar red floor pump. Apparently it is different than the newer red floor pump. The hose fit the same, but the chuck was different. Instead of having separate presta / schrader valves this has the reversible valve that must be taken apart if you go between the two. This is an inconvenience, but not a deal-breaker. What nearly is though is how impossibly tight this is when you try to fit it over either valve. You need to give it a few extra pumps past your desired pressure as you'll lose some pressure when you take the valve off. This wasn't the case with my old chuck (though it eventually got leaky and wouldn't hold pressure which is why I got this one).